/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:10,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:10,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:10,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:10,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:10,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:10,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:10,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:10,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:10,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:10,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:10,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:10,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:10,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:10,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:10,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:10,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:10,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:10,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:10,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:10,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:10,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:10,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:10,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:10,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:10,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:10,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:10,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:10,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:10,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:10,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:10,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:10,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:10,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:10,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:10,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:10,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:10,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:10,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:10,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:10,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:10,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:52:10,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:10,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:10,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:10,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:10,310 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:10,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:10,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:10,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:10,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:10,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:10,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:10,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:10,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:10,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:10,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:10,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:10,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:10,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:10,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:10,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:10,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:10,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:10,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:10,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:10,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:10,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:10,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:10,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:10,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:10,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:52:10,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:10,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:10,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:10,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:10,790 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:10,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 07:52:10,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/044ee825d/b0495e95fec145189ddadc9e1eaee0b6/FLAG60d0f590f [2020-09-25 07:52:11,660 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:11,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 07:52:11,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/044ee825d/b0495e95fec145189ddadc9e1eaee0b6/FLAG60d0f590f [2020-09-25 07:52:11,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/044ee825d/b0495e95fec145189ddadc9e1eaee0b6 [2020-09-25 07:52:11,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:11,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:11,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:11,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:11,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:11,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:11" (1/1) ... [2020-09-25 07:52:11,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fd9ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:11, skipping insertion in model container [2020-09-25 07:52:11,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:11" (1/1) ... [2020-09-25 07:52:11,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:11,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:12,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:12,535 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:12,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:12,677 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:12,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12 WrapperNode [2020-09-25 07:52:12,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:12,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:12,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:12,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:12,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... [2020-09-25 07:52:12,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... [2020-09-25 07:52:12,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... [2020-09-25 07:52:12,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... [2020-09-25 07:52:12,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... [2020-09-25 07:52:12,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... [2020-09-25 07:52:12,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... [2020-09-25 07:52:12,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:12,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:12,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:12,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:12,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:12,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:12,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:12,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:12,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:12,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:12,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:12,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:14,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:14,207 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:14,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:14 BoogieIcfgContainer [2020-09-25 07:52:14,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:14,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:14,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:14,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:14,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:11" (1/3) ... [2020-09-25 07:52:14,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d04a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:14, skipping insertion in model container [2020-09-25 07:52:14,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:12" (2/3) ... [2020-09-25 07:52:14,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d04a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:14, skipping insertion in model container [2020-09-25 07:52:14,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:14" (3/3) ... [2020-09-25 07:52:14,227 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 07:52:14,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:14,250 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:14,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:14,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:14,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:14,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:14,316 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:14,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:14,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:14,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:14,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:52:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 07:52:14,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:14,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:14,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 07:52:14,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:14,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331518506] [2020-09-25 07:52:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:19,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 07:52:19,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:19,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 07:52:19,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:19,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:52:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 07:52:19,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:52:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:52:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:20,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:52:20,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:20,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331518506] [2020-09-25 07:52:20,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:20,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:20,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622644843] [2020-09-25 07:52:20,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:20,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:20,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:20,179 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:52:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:22,585 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 07:52:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:22,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 07:52:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:22,620 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 07:52:22,620 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 07:52:22,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 07:52:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 07:52:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:52:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:52:22,733 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 07:52:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:22,734 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:52:22,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:52:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 07:52:22,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:22,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:22,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:22,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 07:52:22,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:22,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589447202] [2020-09-25 07:52:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:27,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 07:52:27,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:52:27,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:27,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:52:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 07:52:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 07:52:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:28,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:28,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:28,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:52:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:28,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:28,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:28,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:28,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 07:52:28,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:28,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:52:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:52:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:28,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589447202] [2020-09-25 07:52:28,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:28,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:52:28,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374913058] [2020-09-25 07:52:28,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:52:28,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:28,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:52:28,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:52:28,616 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 07:52:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:32,730 INFO L93 Difference]: Finished difference Result 1904 states and 2480 transitions. [2020-09-25 07:52:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:52:32,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 07:52:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:32,742 INFO L225 Difference]: With dead ends: 1904 [2020-09-25 07:52:32,742 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 07:52:32,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:52:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 07:52:32,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 876. [2020-09-25 07:52:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-09-25 07:52:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1014 transitions. [2020-09-25 07:52:32,798 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1014 transitions. Word has length 171 [2020-09-25 07:52:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:32,799 INFO L479 AbstractCegarLoop]: Abstraction has 876 states and 1014 transitions. [2020-09-25 07:52:32,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:52:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1014 transitions. [2020-09-25 07:52:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 07:52:32,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:32,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:32,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:32,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash 276355023, now seen corresponding path program 1 times [2020-09-25 07:52:32,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:32,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305148304] [2020-09-25 07:52:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:37,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:52:37,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 07:52:37,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-09-25 07:52:37,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:37,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 07:52:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:52:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:38,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:38,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:38,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:52:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:52:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:38,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:38,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:52:38,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:38,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305148304] [2020-09-25 07:52:38,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:38,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:38,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38414177] [2020-09-25 07:52:38,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:38,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:38,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:38,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:38,199 INFO L87 Difference]: Start difference. First operand 876 states and 1014 transitions. Second operand 5 states. [2020-09-25 07:52:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:40,397 INFO L93 Difference]: Finished difference Result 2214 states and 2644 transitions. [2020-09-25 07:52:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:40,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 07:52:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:40,406 INFO L225 Difference]: With dead ends: 2214 [2020-09-25 07:52:40,406 INFO L226 Difference]: Without dead ends: 1362 [2020-09-25 07:52:40,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-09-25 07:52:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1164. [2020-09-25 07:52:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2020-09-25 07:52:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1384 transitions. [2020-09-25 07:52:40,452 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1384 transitions. Word has length 175 [2020-09-25 07:52:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:40,453 INFO L479 AbstractCegarLoop]: Abstraction has 1164 states and 1384 transitions. [2020-09-25 07:52:40,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1384 transitions. [2020-09-25 07:52:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 07:52:40,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:40,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:40,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:40,460 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash 956756217, now seen corresponding path program 1 times [2020-09-25 07:52:40,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:40,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346535052] [2020-09-25 07:52:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:45,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:45,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 07:52:45,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:52:45,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:45,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:52:45,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:52:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:45,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:45,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:45,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:45,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:45,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:52:45,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:52:45,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:45,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:52:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 07:52:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:45,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:45,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:52:45,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 07:52:45,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:45,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:45,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:45,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:52:45,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:45,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346535052] [2020-09-25 07:52:45,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:45,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:45,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354599706] [2020-09-25 07:52:45,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:45,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:45,861 INFO L87 Difference]: Start difference. First operand 1164 states and 1384 transitions. Second operand 7 states. [2020-09-25 07:52:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:48,318 INFO L93 Difference]: Finished difference Result 3354 states and 4088 transitions. [2020-09-25 07:52:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:48,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 07:52:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:48,337 INFO L225 Difference]: With dead ends: 3354 [2020-09-25 07:52:48,338 INFO L226 Difference]: Without dead ends: 2214 [2020-09-25 07:52:48,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2020-09-25 07:52:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1958. [2020-09-25 07:52:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-09-25 07:52:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2351 transitions. [2020-09-25 07:52:48,413 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2351 transitions. Word has length 216 [2020-09-25 07:52:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:48,414 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2351 transitions. [2020-09-25 07:52:48,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2351 transitions. [2020-09-25 07:52:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 07:52:48,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:48,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:48,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:48,425 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:48,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:48,425 INFO L82 PathProgramCache]: Analyzing trace with hash 19036305, now seen corresponding path program 1 times [2020-09-25 07:52:48,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:48,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131106441] [2020-09-25 07:52:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:53,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 07:52:53,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:52:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:53,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:52:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 07:52:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:52:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:53,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:53,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:53,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:52:53,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:53,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:53,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:53,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:53,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:52:53,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:52:53,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:53,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:52:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:53,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:53,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:52:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:52:53,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 07:52:53,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:53,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:52:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:53,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131106441] [2020-09-25 07:52:53,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:53,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:52:53,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99692465] [2020-09-25 07:52:53,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:52:53,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:53,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:52:53,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:52:53,888 INFO L87 Difference]: Start difference. First operand 1958 states and 2351 transitions. Second operand 8 states. [2020-09-25 07:52:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:57,478 INFO L93 Difference]: Finished difference Result 5210 states and 6519 transitions. [2020-09-25 07:52:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:52:57,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-25 07:52:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:57,498 INFO L225 Difference]: With dead ends: 5210 [2020-09-25 07:52:57,498 INFO L226 Difference]: Without dead ends: 3093 [2020-09-25 07:52:57,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:52:57,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2020-09-25 07:52:57,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2977. [2020-09-25 07:52:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2977 states. [2020-09-25 07:52:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 3621 transitions. [2020-09-25 07:52:57,615 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 3621 transitions. Word has length 219 [2020-09-25 07:52:57,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:57,615 INFO L479 AbstractCegarLoop]: Abstraction has 2977 states and 3621 transitions. [2020-09-25 07:52:57,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:52:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 3621 transitions. [2020-09-25 07:52:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 07:52:57,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:57,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:57,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:57,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:57,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1783992526, now seen corresponding path program 1 times [2020-09-25 07:52:57,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:57,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132713500] [2020-09-25 07:52:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking...